A highly sensitive temperature sensor

Abstract

This utility model discloses a highly sensitive temperature sensor, relating to the field of temperature sensor technology. It includes a wire with a detection head and a connector fixedly connected to both ends, forming the main body of the temperature sensor. A fixing sleeve is provided on the outer side of the wire near the detection head. A wiring sleeve is fixedly connected inside the fixing sleeve, and four equidistantly distributed elastic clamps are fixedly connected to the inner end of the wiring sleeve. A rotating sleeve is slidably connected inside the fixing sleeve, and the rotating sleeve is fitted onto the outer side of the elastic clamps. This highly sensitive temperature sensor, through the threaded engagement of the elastic clamps in the fixing sleeve and the rotating sleeve, achieves clamping and fixing of the wire, effectively preventing wire displacement due to vibration or pulling, enhancing the stability and durability of the sensor. Simultaneously, the combined design of the protective tube and the corrugated tube improves the wire's wear and corrosion resistance, extending its service life.

Description

Technical Field

[0001] This utility model relates to the field of temperature sensor technology, specifically a highly sensitive temperature sensor. Background Technology

[0002] A temperature sensor is a device used to measure the temperature of an object or environment. It can convert temperature changes into electrical signals or other measurable forms, making it convenient to monitor the ambient temperature.

[0003] To overcome the aforementioned deficiencies, a prior art Chinese patent (publication number: CN214149609U) discloses a high-sensitivity temperature sensor, comprising a sensor body. The sensor body includes an inner protective portion and an outer protective portion. The inner protective portion includes a substrate layer, and an insulating layer is fixedly connected to the top of the substrate layer. The outer protective portion includes a barrier layer, a reinforcing layer is fixedly connected to the top of the barrier layer, a high-temperature resistant layer is fixedly connected to the top of the reinforcing layer, and a corrosion-resistant layer is fixedly connected to the top of the high-temperature resistant layer. The substrate layer is made of ceramic, the insulating layer is made of insulating rubber, and the barrier layer is made of polyvinylidene fluoride. Through the coordinated use of the sensor body, inner protective portion, substrate layer, insulating layer, outer protective portion, barrier layer, reinforcing layer, high-temperature resistant layer, and corrosion-resistant layer, the corrosion resistance, high-temperature resistance, and ductility of the sensor body can be effectively improved, enabling the sensor body to be used in complex environments.

[0004] While existing technologies can overcome the shortcomings mentioned above, other problems still exist in their operation: temperature sensors are encapsulated with thermistor materials, and temperature detection is achieved by changing the resistance or potential of the thermistor materials through temperature. The detection head of existing temperature sensors is generally in a fixed state, and the position of the detection head is not easy to adjust after the temperature sensor is installed. Utility Model Content

[0005] The purpose of this invention is to provide a highly sensitive temperature sensor to solve the problem in the prior art where the detection head of the existing temperature sensor is generally in a fixed state, and the position of the detection head is not easy to adjust after the temperature sensor is installed.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a highly sensitive temperature sensor, comprising a wire, wherein a detection head and a connector are fixedly connected to both ends of the wire, and the wire, the detection head and the connector constitute the main body of the temperature sensor;

[0007] A fixing sleeve is provided on the outer side of the end of the wire near the detection head. A cable routing sleeve is fixedly connected inside the fixing sleeve, and four equidistantly distributed elastic clamps are fixedly connected to the inner end of the cable routing sleeve. A rotating sleeve is slidably connected inside the fixing sleeve, and the rotating sleeve is sleeved on the outer side of the elastic clamps.

[0008] Preferably, the elastic clamping plate has threads on its outer side, the rotating sleeve has internal threads on its inner side, and the rotating sleeve is connected to the threads on the outer side of the elastic clamping plate through the internal threads.

[0009] Preferably, the contact surfaces inside the rotating sleeve and at the end of the elastic clamp are set as inclined surfaces, and the wires are sequentially passed through the wiring sleeve and the rotating sleeve.

[0010] Preferably, an isolation plate is fixedly connected to the outside of the fixing sleeve, and an external thread is provided on the outside of the fixing sleeve, so that the fixing sleeve can be detachably installed in the mounting hole of the equipment through the external thread.

[0011] Preferably, a connecting plate is slidably connected to the outside of the fixing sleeve, and a fixing nut is threadedly connected to the outside of the fixing sleeve. The fixing nut and the isolation plate abut against the two sides of the connecting plate to form a clamping and fixing.

[0012] Preferably, a protective tube is sleeved on the outside of the conductor, and corrugated pipes are fixedly connected to both ends of the protective tube.

[0013] Preferably, the end of the corrugated pipe near the detection head is fixedly connected between the protective pipe and the fixing sleeve, and the corrugated pipe near the connector is fixedly connected between the protective pipe and the connector.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This highly sensitive temperature sensor uses the elastic clamp inside the fixed sleeve and the threaded engagement of the rotating sleeve to clamp and fix the wire, effectively preventing wire displacement due to vibration or pulling, thus enhancing the stability and durability of the sensor. At the same time, the combined design of the protective tube and the corrugated tube improves the wear resistance and corrosion resistance of the wire, extending its service life.

[0016] The extension length of the detection head can be easily adjusted by sliding and rotating the rotating sleeve, making operation simple and flexible, meeting the needs of different environments and equipment. During installation, it can be quickly fixed by fixing nuts and connecting plates, adapting to various equipment specifications and improving the convenience and adaptability of use. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the fixing sleeve structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the rotating sleeve structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the elastic clamping plate structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the connecting plate structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the protective tube structure of this utility model.

[0023] In the diagram: 1. Wire; 2. Detection head; 3. Connector; 4. Fixing sleeve; 5. Isolation plate; 6. Cable routing sleeve; 7. Elastic clamp; 8. Rotating sleeve; 9. Internal thread; 10. Connecting plate; 11. Fixing nut; 12. Protective tube; 13. Corrugated pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figure 1 - Figure 6 This utility model provides the following technical solution: A highly sensitive temperature sensor includes a wire 1, with a detection head 2 and a connector 3 fixedly connected to both ends of the wire 1, and the wire 1, detection head 2, and connector 3 constitute the main body of the temperature sensor; a fixing sleeve 4 is provided on the outer side of the end of the wire 1 near the detection head 2, a wiring sleeve 6 is fixedly connected inside the fixing sleeve 4, and four annularly distributed elastic clamps 7 are fixedly connected to the inner end of the wiring sleeve 6; a rotating sleeve 8 is slidably connected inside the fixing sleeve 4, and the rotating sleeve 8 is sleeved on the outer side of the elastic clamps 7; the outer side of the elastic clamps 7 is provided with threads, and the inner side of the rotating sleeve 8 is provided with internal threads 9, and the rotating sleeve 8 is connected to the outer side of the elastic clamps 7 through the internal threads 9; the contact surface between the inside of the rotating sleeve 8 and the end of the elastic clamps 7 is... The wire 1 is set as an inclined plane and is sequentially passed through the wiring sleeve 6 and the rotating sleeve 8. The outer side of the fixed sleeve 4 is fixedly connected to the isolation plate 5, and the outer side of the fixed sleeve 4 is provided with external threads. The fixed sleeve 4 is detachably installed in the mounting hole of the equipment through the external threads. The outer side of the fixed sleeve 4 is slidably connected to the connecting plate 10, and the outer side of the fixed sleeve 4 is threadedly connected to the fixing nut 11. The fixing nut 11 and the isolation plate 5 respectively abut against the two sides of the connecting plate 10 to form a clamping fixation. The outer side of the wire 1 is covered with a protective tube 12, and both ends of the protective tube 12 are fixedly connected to the corrugated tube 13. The end of the corrugated tube 13 near the detection head 2 is fixedly connected between the protective tube 12 and the fixed sleeve 4, and the end of the corrugated tube 13 near the connector 3 is fixedly connected between the protective tube 12 and the connector 3.

[0026] The temperature sensor senses changes in ambient temperature through the detection head 2 and transmits electrical signals to the terminal device connected to the connector 3 via the wire 1. The detection head 2, as the sensitive element of the sensor, is directly exposed to the environment to be measured. It is encapsulated with a thermistor material. When the ambient temperature changes, the resistance or potential value of the thermistor material changes accordingly, and the electrical signal is transmitted to the connector 3 via the wire 1.

[0027] The sensor has a fixed sleeve 4 at one end of the wire 1 near the detection head 2. Inside the fixed sleeve 4 are integrated wiring sleeve 6 and four ring-shaped elastic clamps 7. When the rotating sleeve 8 rotates along the thread on the outside of the elastic clamps 7, the end of the elastic clamps 7 contacts the inclined surface on the inside of the rotating sleeve 8, forcing the elastic clamps 7 to contract toward the center, thereby clamping the wire 1 that passes through the wiring sleeve 6 and preventing the wire from shifting due to vibration or external force.

[0028] The external thread on the outside of the fixing sleeve 4 allows it to be screwed into the mounting hole of the equipment, and the embedding depth is limited by the isolation plate 5 to prevent excessive insertion and damage to internal components. A connecting plate 10 and a fixing nut 11 are also provided on the outside of the fixing sleeve 4. When the fixing nut 11 is tightened along the external thread of the fixing sleeve 4, the connecting plate 10 is squeezed between the isolation plate 5 and the fixing nut 11, so that the sensor can be quickly installed on equipment of various specifications.

[0029] The protective tube 12 wrapped around the outside of the conductor 1 is made of wear-resistant and corrosion-resistant material to block external physical damage or chemical erosion. The corrugated tubes 13 at both ends of the protective tube 12 allow the conductor 1 to bend within a certain range through their flexible expansion and contraction characteristics. When the conductor 1 is subjected to bending force, the corrugated structure of the corrugated tube 13 can disperse the stress and prevent the connection between the protective tube 12 and the fixing sleeve 4 and the plug 3 from cracking due to repeated bending.

[0030] When it is necessary to adjust the extension length of the detection head 2, the rotating sleeve 8 can be slid outward along the fixed sleeve 4 so that its internal thread 9 disengages from the external thread of the elastic clamp 7. The elastic clamp 7 releases the wire 1 due to the loss of the constraint of the rotating sleeve 8. At this time, the wire 1 can move freely inside the wiring sleeve 6. The user can directly pull the detection head 2 outward to the target position manually.

[0031] During this process, the wire 1 is pulled out from inside the protective tube 12 and the corrugated tube 13, causing the corrugated tube 13 to contract to compensate for the increase in the exposed length of the wire. Its pleated structure avoids stress concentration at the connection between the protective tube 12 and the fixing sleeve 4 and the plug 3 through flexible deformation. After the adjustment is completed, the reverse sliding rotating sleeve 8 makes its internal thread 9 re-engage with the elastic clamp 7. The rotating sleeve 8 is rotated again to drive the elastic clamp 7 to clamp the wire 1, thereby fixing the extension position of the detection head 2.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A highly sensitive temperature sensor, comprising a wire (1), wherein a detection head (2) and a connector (3) are fixedly connected to both ends of the wire (1), and the wire (1), the detection head (2) and the connector (3) constitute the main body of the temperature sensor; Its features are: A fixing sleeve (4) is provided on the outer side of the end of the wire (1) near the detection head (2). A wiring sleeve (6) is fixedly connected inside the fixing sleeve (4), and four ring-shaped elastic clamps (7) are fixedly connected to the inner end of the wiring sleeve (6). A rotating sleeve (8) is slidably connected inside the fixing sleeve (4), and the rotating sleeve (8) is sleeved on the outer side of the elastic clamps (7).

2. The highly sensitive temperature sensor according to claim 1, characterized in that: The elastic clamp (7) has a thread on its outer side, and the rotating sleeve (8) has an internal thread (9) on its inner side. The rotating sleeve (8) is connected to the thread on the outer side of the elastic clamp (7) through the internal thread (9).

3. The highly sensitive temperature sensor according to claim 2, characterized in that: The contact surfaces inside the rotating sleeve (8) and at the end of the elastic clamp (7) are set as inclined surfaces, and the wire (1) is sequentially passed through the wiring sleeve (6) and the rotating sleeve (8).

4. The highly sensitive temperature sensor according to claim 3, characterized in that: An isolation plate (5) is fixedly connected to the outside of the fixed sleeve (4), and an external thread is provided on the outside of the fixed sleeve (4). The fixed sleeve (4) is detachably installed in the mounting hole of the equipment through the external thread.

5. A highly sensitive temperature sensor according to claim 4, characterized in that: The fixing sleeve (4) is slidably connected to the outer side of the connecting plate (10), and the fixing sleeve (4) is threadedly connected to the outer side of the fixing nut (11). The fixing nut (11) and the isolation plate (5) respectively abut against the two sides of the connecting plate (10) to form a clamping fixation.

6. A highly sensitive temperature sensor according to claim 1, characterized in that: The conductor (1) is fitted with a protective tube (12) on the outside, and corrugated pipes (13) are fixedly connected to both ends of the protective tube (12).

7. A highly sensitive temperature sensor according to claim 6, characterized in that: The corrugated pipe (13) is fixedly connected between the protective pipe (12) and the fixed sleeve (4) at one end near the detection head (2), and the corrugated pipe (13) near the plug (3) is fixedly connected between the protective pipe (12) and the plug (3).

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